modx convert to mobile version?

What would be the easier way to convert a standard xhtml page, so that it could be vewied on the mobile phone?


(would have to create each page manually I presume?)

why not?

<link href="mobile.css" rel="stylesheet" type="text/css" media="handheld" />

I think if xhtml is well written, most of the latest mobile devices adjusts the page content to its screen viewing area automagically. But adding extra mobile css can give you more control over what to show and how to show.